/usr/lib/x86_64-linux-gnu/ is in libgraphviz-dev 2.40.1-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/graphviz/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/libcdt.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/libcgraph.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/libgvc.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/libgvpr.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/liblab_gamut.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/libpathplan.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/libxdot.pc
/usr/lib/x86_64-linux-gnu/graphviz/libgvplugin_core.so
/usr/lib/x86_64-linux-gnu/graphviz/libgvplugin_dot_layout.so
/usr/lib/x86_64-linux-gnu/graphviz/libgvplugin_gd.so
/usr/lib/x86_64-linux-gnu/graphviz/libgvplugin_gdk.so
/usr/lib/x86_64-linux-gnu/graphviz/libgvplugin_gtk.so
/usr/lib/x86_64-linux-gnu/graphviz/libgvplugin_neato_layout.so
/usr/lib/x86_64-linux-gnu/graphviz/libgvplugin_pango.so
/usr/lib/x86_64-linux-gnu/graphviz/libgvplugin_xlib.so
/usr/lib/x86_64-linux-gnu/libcdt.so
/usr/lib/x86_64-linux-gnu/libcgraph.so
/usr/lib/x86_64-linux-gnu/libgvc.so
/usr/lib/x86_64-linux-gnu/libgvpr.so
/usr/lib/x86_64-linux-gnu/liblab_gamut.so
/usr/lib/x86_64-linux-gnu/libpathplan.so
/usr/lib/x86_64-linux-gnu/libxdot.so